Casing for sausages.



WALLACE PATIEN GOHUE, F TQEONTG, UNTARIU, CANADA, ASSIGNQR 0E ONE-THIRD TO THE WIWAM DAVIES CQMIPANY, LIMITED, 0F TORONTO, CANADA, A GORPORA TION OF CANADA, AN ONE-THIRD IEO ARE CAREY FOX, OF TORONTQ, CANADA.

CASING FOR SAUSAGES.

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Ito Drawing.

- Canada, have invented certain new and useful Im rovements in Casings for Sausages;

and I do hereby declare the foliowing to be a full, clear, and exact description of the invention, such as will enable others skllled in the art to which it appertains to make and use the same.

In Letters Patent of the United States- No. 1,070,776, granted to Wallace Patten Gohoe and "Edward ,Carey Fox, under date of August 19, 1913, there is described and claimed certain improvements 1n caslngs for sausages, said casings consisting essentlally of dried cellulose hydrate.

My present invention relates to a further development of the manufacture of sausage casings, and has for its object the two-fold purpose of increasing the elasticity of the casing Walls and of increasing their waterproof qualities.

In those instances where the mam purpose is to increase the elasticity of the walls of the casing, ll prefer to combine withthe cellulose hydrate, in homogeneous admixture therewith, a percentage of gelatin, and, ultimately, to treat the casing made from the mixture, by means of any suitable hardening agent, as, for instance, alum, formaldehyde, tannin, or the like.

The gelatin is employed in proportion varying from 5% to 25% by Weight of the cellulose hydrate (calculated dry) in the final product. Assuming that the cellulose hydrate is viscose, a concentrated solution, in water, of the gelatin may be added to the viscose, after the latter is prepared and ready for use, and the two ingredients may then be thoroughly and homogeneously mixed preparatory to the making of the easings therefrom. It is preferable, however, in making up the mixture, to first dissolve the gelatin in water and add the mercerized wood-pu1p after it has been converted by the carbon bisulfid. In either case, the easing is to be extruded, in the form of a tube of wall thickness appropriate to the manufacture of sausage casings, and,after such extrusioin, the gelatin constituent of the exspecification of Letters Yatent.

hanced.

Instead of using gelatin for improving the water-proof qualities of the casing, this may likewise be edected to'even greater advantage by means of incorporating'therein a fatty acid, so as to make it impermeable to water. To this end, there may be incorporated with the viscose solution, a suitable stearate, as for instance, potassium stearate. The mixture is then extruded in the form" of the desired tubular casing, is c0- agulated, and the coagulated casin is received in a bath of salt solution for instance chlorid of sodium) in which neither the viscose nor the potassium stearate is soluble. The casing is allowed to remain in the salt solution until the coagulated viscose has reverted to cellulose hydrate. From the casing as thus far produced, either an edible or a non-edible product can be obtained. Thus, to make an edible product consisting of cellulose hydrate'having incorporated therein a fatty acid, the tubular casing after emer ing from the bath of salt solution referred to is treated with a weak acid or an acid salt, which will unite with the basic radical of the soap, leaving behind the fatty acid in intimate contact with the cellulose hydrate. The casing may then be finished in any suitable manner.

If the casing is not to be edible, but is to be so treated as to make it more or less resistant to water, it may be treated (instead of with a weak acid), with a solution of a pose will. be satisfied by carrying the dew Patented that. 26, t ild Application filed December 31, 1913. Serial Ito. 809,731.

salt of a metal of such nature as to produce hydration to this extent, and, within the meaning of the present specification, the product may then be regarded as dried cellulose hydrate even though the drying is not carried further. It is preferred, however, not only to dry it sufficiently to give it the strength desired, but to dry it so thoroughly that it can be kept for a long period of time without deterioration. In this preferred condition, with the Water of hydration substantially driven ofi", the cellulose hydrate is probably converted to substantially pure cellulose, and it Will, of course, be understood that, in'the sense of the present specification, this preferred maximum de ree of dehydration is likewise included.

aving thus described my invention, What I claim is 1. A thin-walled tube of dried cellulose hydrate associated with a water-proofing ingredient.

2. A thin-walled tube of dried cellulose hydrate containing an ingredient which imparts to it additional elasticity and additional water-proof qualities.

3. A thin-walled tube of dried cellulose hydrate associated with an ingredient insoluble in water.

4. A thin-Walled tube of dried cellulose hydrate associated with an edible ingredient insoluble in water.

In testimony whereof I aflix my signature, in presence of two Witnesses.

WALLACE PATTEN COHOE.

Witnesses:

JOHN C. PENNm, H. E. JOHNSON. 

